* There is a special pass for Japan Rail, ”Japan’s biggest railway group” (Not sold in Japan).
As a reference, please check this URL; http://www.japanrailpass.net/en/index.html

If you do not have Japan Rail Pass:

* We suggest you to purchase this special package ticket, ‘N'EX TOKYO Round Trip Ticket' at JR ticket office in the airport. As the reference, please check this URL: http://www.jreast.co.jp/e/pass/nex_round.html